1513115525 has 12 divisors (see below), whose sum is σ = 1878525600. Its totient is φ = 1209032880.

The previous prime is 1513115507. The next prime is 1513115557. The reversal of 1513115525 is 5255113151.

It is not a de Polignac number, because 1513115525 - 2²⁴ = 1496338309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15095 + ... + 57044.

It is an arithmetic number, because the mean of its divisors is an integer number (156543800).

Almost surely, 2^1513115525 is an apocalyptic number.

It is an amenable number.

1513115525 is a deficient number, since it is larger than the sum of its proper divisors (365410075).

1513115525 is an equidigital number, since it uses as much as digits as its factorization.

1513115525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72988 (or 72983 counting only the distinct ones).

The product of its digits is 3750, while the sum is 29.

The square root of 1513115525 is about 38898.7856494261. The cubic root of 1513115525 is about 1148.0409051639.

Adding to 1513115525 its reverse (5255113151), we get a palindrome (6768228676).

The spelling of 1513115525 in words is "one billion, five hundred thirteen million, one hundred fifteen thousand, five hundred twenty-five".